Swivel.



H. M. Rmmns.

' SWIVEL.

APPLICATION FILED Amme, 1907.

Patented Feb. 23, 1909.

UNITED STATES PAEIENT OFFICE.

HORACE M. ROUNDS, OF SORRY, PENNSYLVANIA, ASSIGNOR TO WARREN AXE & TOOL COMPANY, OF WARREN, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SWIVEL.

Specification of Letters Patent.

Application filed August 16, 1907.

Patented Feb. 23, 1909.

Serial No. 388,781.

To all whom it may concern:

Be it known that I, HORACE M. RoUNDs, a citizen of the United States, residing at Corry, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Swivels, of which the following is a specification, reference being had to the accompanying drawln s.

Illy invention relates to improvements in swivels; and an object of my invention is to provide a swivel which will admit of ready repair in the woods or field far from and wlthout resort to a blacksmith sho which will not catch against rocks, logs, b ock ulleys and like obstacles and which, there ore, may be drawn flat along the ground; in which the arts are so shaped that under the Stress of t e ull, they are drawn together; in which the draw-heads are effectually protected from dirt and from contact with the line or link and are ke t constantly lubricated and in line Wit each other; and which is particularly well adapted to withstand side strain.

One feature of my new swivel lies in the provision of a retaining band which is seated upon a shoulder formed upon the eye-stem o the swivel and is held in lace by a key of wedge or tapering shape which, in addition to retaining the band in lace, excludes dust and dirt from the draw-heads, acts as a formeture for the lubricant, holds the two draw-heads in exact relation to each other, providing an even surface at all times'for them, and revents the link or line from rubbing against the draw-head opposed to the link.

Another feature of my new swivel resides in the conical or tapering shape of the eye stem and the loop stem, both of which taper from the draw-head end to the outer end. This shape insures that the swivel will pass easily over the ulley or sheave of a block. Further, since t e swivel is thicker at the retaining band or center than at either end, the swivel will pass and avoid obstacles and will work easily, when drawn flat along the ground.

A third feature of my new swivel is that it is about one third shorter than swivels heretofore made, whereby the leverage is reduced and the swivel is adapted to be passed over and around pulleys, logs and other parts of a curved shape without breaking under the side strain produced. My new swivel is further adapted to withstand side strain by reason of the two-part construction of its draw-head, the wide shoulder formed on the eye-stem and the seating of the retaining band upon that shoulder.

A fourth feature of my new swivel consists in the provision of a double or two-part draw-head, whereby the strain is distributed and the parts of the swivel are prevented from stic ring or freezing, as it is commonly called, due to the metal of the two arts flowing under the great stress of a lieavy pull.

A fifth feature of my invention is found in the construction of the main drawing parts, the loop stem being s lit lengthwise and its parts being held toget er not only by the retaining band but by the ull on the draft line which passes throug the loop. In fact, when the pull is exerted, the parts of the loop-stem are so ressed together as to relieve the retaining and from stress and wear and the band really serves to retain the parts of the loop-stem in place only while no pull is being exerted on the cable.

In my new swivel the strain is distributed entirely around the swivel, instead of being confined to one or two narrow points.

In the drawings illustrating the principle of my invention and the best mode now known to me of applying that principle, Figure 1 is an elevation of my new swivel, the parts being assembled; Fig. 2 is a central longitudinal section on the line A A of Fig. 1; Fig. 3 is a section on the line B B of Fig. 1; Fig. 4 is a section on the line C C of Fig. 2; Fig. 5 is an inside elevation of one part of the two-part loop-stem;-Fig. 6 is a view of the eye-stem looking towards the right in Fig. 1; and Fig. 7 is a detail of the lhe eye-stem a is formed with an eye Z1 and from the stem proper 0 extends a draw head all formed with the ring-shaped or annular flanges e. The bod art f is formed with a shoulder g wlicfi extends inwardly to meet the stem proper c at its base; and upon the shoulder g is seated a retainin band h. The latter holds toether 1; e two parts of the loop-stem i one alf of which is shown in Fig. 5 and is there shown to be formed with an opening 3' for the draft line or link and with two inwardlyprojecting semi-circular flanges k which,

when the arts are assembled, fit into the grooves m etween the annular flanges e on the draw-head of the eye-stem (Figs. 2, 5 and 6). So far as known to me no swivel has heretofore been made with a two-part draw-head, the two-part construction serving to distribute the stress and to prevent freezing of the parts.

Each part of the loop-stem is formed with a groove n at each side at the base of the o ening and into these grooves n is s pped t e key 0 (Fig. 7). The latter serves not only to retain the band h in lace but it also acts to prevent leakage oi the lubricant from the draw-head, to exclude dirt therefrom, to hold the loop-stem and the eye-stem in exact relation, providing an even surface at all times for the draw-heads and to prevent the link or draft-line from abrading the latter.

As is best shown in Figs. 2 and 6, the eyestem and the loop-stem both ta er towards the outer end, leaving the thic est part of the swivel at the retaining band and giving to the ends of the swivel a conical or tapering shape which permits the swivel to pass obstacles without engaging them, when it is drawn fiat along the ground. Further, the two-part construction of the loop-stem parts causes the parts to be drawn together y the pull on the draft line engaging them, thereby relieving the band h of any stress tending to wear or deform it.

The shoulder g in combination with the retaining band it serves to exclude dirt and other foreign matter from the draw-heads. Further, it similarly aids to resist side stress, in which function it is assisted by the twopart construction of the draw-head. This strength to resist side strain enables the swivel to be passed over pulleys, logs and the like having rounded contours, in the attainment of which result the tapering shape of the ends of the swivel aids.

I claim:

1. A swivel consisting of a air of stems, one of which is formed with a d i'aw-head and the other of which is multi-part and fits over said draw-head; a retaining band which encircles one of said stems and holds the same in operative relation to the other of said stems; and a key which engages said multiart stem and covers the free end of said d i'aw-head; said key serving to hold said retaining band in place and in conjunction with the latter to act as a fermeture for the lubricant and to exclude dirt.

2. A swivel consisting of a pair of stems one of which is formed with a draw-head and a shoulder and the other of which is multi-part and fits over said draw-head; a retaining band which encircles one of said stems and bears against said shoulder; and a key which engages said multi-part stem and passes over said band and the free end of said draw-head; said key holding the other parts in operative relation and said band 1n conjunction with said. shoulder serving to resist side strain.

In witness whereof I have hereunto set my hand at said Corry this 3rd day of August A. D. 1907, in the presence of the two undersigned witnesses:

H. M. ROUNDS.

Witnesses:

LEE L. SMITH, BYRON F. BABBITT. 

